TVGA were the consultants on the project, and were able to turn around plans in just six weeks from their first emergency inspection of the structure, based on their experience with the Lock E-9 project. Cianbro Corporation was the low bidder, completing the work on schedule in the late spring of 2001. Greulich Bridge Products supplied the grid portion of the Exodermic deck.

This project was the third in New York State to use lightweight high per- formance concrete on an Exodermic deck. The mix design includes 6% microsilica, 20% fly ash, and lightweight aggregate. Design weight was 115 lbs/cu. ft. (1846 kg/cu. meter). 

Following the successful installation of an Exodermic deck on the Lock E-9 -

bracing members failed, and the truss deflected one foot (300 mm) down-

Movable Dam 5 structure (ExoNews Autumn 2000), the New York State Thruway Authority’s Canal Design Bureau specified essentially the same deck for the re-decking of a similar structure a few miles away.

stream. Even after the hydrostatic pres- sure was relieved by the construction of a cofferdam, the truss was still deflected 5 to 6 inches (125 to 150 mm) down- stream. With the major steel work required to repair the damage, the Thruway decided to accelerate the already scheduled rehabilitation of the

The Lock E-12 - Moveable Dam 8 structure on the Mohawk River was

damaged during a severe spring flood in 2000. A number of the bottom lateral

structure, which included a new Exodermic deck.

Exodermic deck replaced old open grid deck.

Grid deck panels were fabricated with integral scuppers. Steel channel curb was installed in the field.